<div class="figure-wrapper">
  <figure
      style="justify-content:center;"
      aria-label="Three checkboxes in a row that are unselected, selected, and indeterminate">
    <md-checkbox touch-target="wrapper"></md-checkbox>
    <md-checkbox touch-target="wrapper" checked></md-checkbox>
    <md-checkbox touch-target="wrapper" indeterminate></md-checkbox>
  </figure>
</div>